Type-writing machine.



L. R. ROBERTS.

TYPE WRITING MACHINE.4

APPucmoN FILED 0m31.191s.

l 1 88,835'. Patented June 27, 1916.

Z SHEETS-SHEET l.

L. R. ROBERTS.

TYPE WRITING MACHINE.

APPLICATION HLED nic. 31. 1913.

Patented June 27, 1916.

Z SHEETS-'SHEET 2.r`

messes viding suitable returning springs for the type actions, and alsorenders the action more desirable in many cases.

Variations may be resorted to within the scope of the invention, andportions of the improvements may be used without others.

Having thus'described my invention, I claim:

1. In a type-bar action for typewriting machines, the combination with atype-bar anda type-key, of a thrust bar pivoted to the type-bar, a linkconnecting the key lever and thrust bar and transmitting an operatingforce from the key lever to the thrust bar in the direction of length ofthe link, and means to guide the thrust bar for movement bodily in adirection transverse to that of the link.

2. In a typewriting machine, the coinbination with a type-bar, of akey-lever, an actuating thrust bar pivoted to the type-bar and extendingrearwardly therefrom substantially parallel with the key lever, .and alink connecting the key lever and said thrust bar, and free to transmitan operating force in the direction of its length directly from the keylever to the thrust bar for actuating the type-bar. l

3. In a typewriting machine, 'the combination with a horizontallydisposed typebar and a key lever, of a thrust bar pivote-d to thetype-bar and extending substantially parallel with the key lever, asecond pivot for the thrust bar, and a link connecting the key lever andthrust bar and transn'iittingr an operatingforce to the thrust barcoinprising a combined endwise thrust of the bar and a turning moment ofthe barabout said serond pivot as a fulcruin.

4. In a front-strike writing machine, the combination of a type-barpivoted to swing upwardly and rearwardly to the printing point, a thrustbar connected to the typc-bar belozv and in rear of the type-bar pivotand extending rearwardly from the type-bar, a key lever, a linkconnecting the key lever to the thrust bar and transmitting an operatingforce in the direction ot its length to the thrust bar, and means forsupporting and guiding the thrust bar, and causing said force to'produce a combined downward pli-ll and Jforward thrust of the thrustbar on the type-bar.

5. The combination with a pivoted typebar, of an actuating bar pivotedthereto to move, at its point of connection with theL stantiallystraight-line position with type-bar near the printing point.

't'. In a typewriting machine, the 4coinbination with a platen, of apivotedltypea bar, a thrust bar pivoted to the type-bar to swing in anare about the type-bar pivot as oted to the thrust bar and having anangular relation thereto, a key lever, a connection between the keylever and said bar' for swinging the said bar and link into asubstantially straight-line position with the 80 a center during thetype stroke, a link pivA type-bar near the printing point, and an'adjustable stop when in such position.

8. The combination with swinging rearwardly to the printing point,

of a key lever, a thrust rod pivoted to thel type-bar and extendingrearwardly therea type -bar to engage the thrust bar from, a linkconnecting the key lever and said rod and arranged to exert a directpull on the rod in the direction in which the' link extends, thepivotpoint of said rod and type-bar being so positioned that the pull ofthe link during the initial movement of the type-har is in a directionsubstantially parallel with'the direction of movement of'said ine pivot,the 'direction of movement olf-the pivot relatively to the pull of thelink grad-4 i ually changing during the type stroke to a directionapproximately perpendicular to' said pull, and means for supporting and`guiding the rod fior bodily movement as the type-har swings, and causingthe pull of the link to produce an endwise forward thrust ot said rod onthe type-bar during tlie finalv portion oi' the type stroke.

rlhe combination with a pivoted type-bar, of a floating bar pivoted atone end tothe typeba r to swing the type-bar about its pivot from itsposition of rest toward printing position, a link to which the other end'of said floating bar is pivoted, ay key lever, and a link con` nectingsaid lever to said floating bar at a point intermediate the ends of thefloating bar and a substantial distance from said' first-mentionedliiik, said floating bar operating during a portion ofthe type stroke asa lever fulcruined to said first-mentioned link and having mainly aswinging movenient about its point of connection with saidlirstanentioned link as a iulcrum.

10. In a typewriting machine, the combination with a pivoted type-barand a key lever, of a pivotally-mounted arm, a thrust bar connectingsaid arm to the type-bar,

snii urin and ini-:m our boing," su' porpvnciionhir to @zich othfr Ebau' is in iis nfiirnnii position of r ohio during rho in rpo Stroke 5.osi i which ho thi' 't bnr and :iiin mi; in a Sub- ,sznitiziiy Siro.line, :imi ii connooingg link hotweon til imr for trani', "Ii-oni thehoy Said Connoof K he weight. of To Y i ippiyng :r

l orco to ho @fije-bnr.

l1. ,in n typmvri-ing nnirhii'ie, the ooinhi` notion. with ii pirotoiitypo-har and n hey icwr, of zioblmtinginoiins for the @ipe-bnrComprising i thrust har piiotoii 'to die po hair, n. pivotallynnonntociarm pivoteci. to said throat har :unl extending snhstainiuiiy :it righi?Luigino rhoroto when the type-har is in its noi-inni pfiisiiion of rest,and a iini; com meeting the hog' of-er to said 'thrust han' formnsiniting nu operziing force from the: key iorer to 'e thrust bnr, he?imiter hrw` ing inniniy swinging increment about its point ofooonoiirioi riigh Suid zii-in (hiring 'i' i' movement oi :nifl thrns bnrgriniiiziiiy changing from soul swinging niowmont to a hoihiy einiwV-oinorenwn or thrust .zippiied io ihn type-har :is the hiier nain, theprimA` Swinging :inn more on'rii'ii ai 5;' no position, the weight of hehoy .Y i seing supported by sind oonnocing Vit u and i :L co infor-'ouh'mansxniting through iho ii.. :Hiring forro applied to the typo-imi'anni o'i'ociii'r; 'for :anhiihoiiiiiiiy :iii positions; of the trim-bnr.

zfin i viiow'riting machins, tho coinhinution with :i pirooii tjypofhuand :i key loros', oi' :i thi-kwil hin* pifotoii :it one Qn-'fi to ih@typo-hor, :i swi ing :irni to which lL liie other vini of ihn ihr-mt haris; pif-"oih :mil :i iink nominating: hi: kin' inver to sind 'ihrnsb harand. supporting; he woigghi oif the key harm'. Said woigi oioruiircLhrongh Sziiii. thrnt har io .iniiy :i oonntiier-huhinoing forro to horiqjio-inn'. nziii'i ihriisi; hair ur winged in miro Lniniy o swingfingrmoro nient :ihoni: its poin: of connection with sani sv-:inging niniduring ho iniiiii porilon o; tho iype iin-ohr, tho morvznon. of sind ihrhm' grziihnihy changing o iinnniy mi omi wiso bodily movement or hrusi;:ipphoci io the type-hair fr# ihr iotoi' :ulaproziriies tho printingpoint, .iii nrus imi* und. swinging: :mn boing fsuhsiiintinivporpcinhouhir rit the beginning; of :i h flp stroke and moving to wurdai. Straight` infu position during (he type stroke.

12E. The combination with n` pivotod typebnr und n key lever, of f1thrust bur pivotcd :it ono ond to tho typo-bnr, :i lringing nrin towhich the oihor vnd of the hi-nat han" is connected, szir'i infinextending; suhsiuniziiiy ai it. :ingles to rho ihriist haar wnih: ih@ty' :ir is iis normali position of; rest, a iii4 'innco'ng the hoy lororto che thrust bz :mi rpt ,infr on opor; Ling force to tho loing; theinthe? to swing about "s giorni; .if ion witg Enid arm duringiiiei'nirini p of vthe typo stroke, said forno oporuhhg swing he thrustnur and swin,` ing;A man toward :i straight-lino nosition dnb nrhi;oonginiiod. noi-i .n of *who typ stroke, and hrrohy canso the, ihrut burto move i dinuiiy and uppir sin endwise thrust:

vigo-bnr, and n. Silop to iiniif, the movenion ho thrust har whensuhstuntiaiiy in iino wit, sind swinging; arm and with the iypohziradjacent the printing point to per initr ho free end of the type-bar tospring iommrii to tho printing point.

14. in n t \.'pcwriting machine, the conihinni'ion wii'h n key 4ever andn pivoted hypo-hor, oi' :i pivoiily-mounted arm extending upward fromits pivot, @thrust bur comico' l io said arm above its pivot, andconnooing sain :irxn to the, ype-har, ai com neming; link ini-woon thehoy haver anzi the iihrnoij bor for t'nnainitting :in operating oroofrom the hay lover to tho thrust bar, :ind cznising; the hitter to swingthe typehur, suini hrost har swinging :said :irin to' wird u posaiiionin :iiincnicnn with tho thrust har, und :i top to liniit the movement ofrho 'hrnsi han anni` Suid firm when the hoy iovor has conipiotod itsstroke, the. body of iho iype-hfir boing brought to rest as the thrustbur engages Suid stop, and the typo carrying ond oi "che typo-bnr beingpermittsd io swing orvzird to the printing p0- sinon.

15. in :i typo'vvriting machine, the coinhinnion with :i key lever and:i swii'iging type-har, of :i pivotuily-mounted arm, n driving inkconnecting said arm to the *ambo-bnr, n'nci connect-ing n'iezinstransmii Ling :i ("riving force from tho key inver to for :mtuating saidiink and arm i smid iini :mi cruising he huh, to drive the typobnr, sindlink: und :mn boing constructed to swing to :i si-i'ziighbiino positionat the conclusion of ho driving stroho of sind arm, thereby to bring;tho huh or body of the typohar io resi: while-3 poriniibingir;typoczirrying fin io spring; 'orwzn'd to tho printing point.

if. in i hypowriing machine, the coni.- hiniiiinn with :1 hoy loro' sindu typo-har, of? :i pivotorl arm, n ihrnst bar betwe-en Suid :irin :anddie typo-b:ir',.:ind n connect-ing link from tho hoy lover to said hrusthar for noiizn'ing the hitter during the type stroke sind swinging saidthrust bar and arm toward "5i stiarigiit-line position, and bringing)rtho hih of the type-bar to rest :it the coinphtion of the key stroke inposition to per init the type-nnrry-i1ig end of the typc-bnr to springforward to ho printing point.

T17. in o typo action for typewriting 1nning the initial downwardmovement of rthe key lever, the thrust bar swings downwardly about it@ypoint of connection with said arm, and during the continued movement ofthe type-bar has a forward endwise movement or thrust in a forwarddirection to the type?4 bar, whereby the thrust bar and said. swingingarm are moved toward a straight-line position during the type stroke.

LYMAN R. ROBERTS.

`Witnesses:

W. O. WESTPHAL,

F. E. ALEXANDER.

